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- W2026353062 abstract "We present the results of high level band structure calculations on the important layered compounds LaSr2Mn2O7 and La2CaCu2O6 ; both of which have the structure of the m=2 member of the Ruddlesden–Popper phases and comprise intergrowths of double perovskite slabs with rock-salt slabs. The cuprate additionally has an ordered oxygen defect. For further comparison, the band structure of tetragonal La2CuO4 has also been calculated. The manganite is a material exhibiting giant magnetoresistance (GMR) effects and the cuprates can be doped to give superconductors. The calculations have been performed using the TB-LMTO-ASA programs within the local (spin) density approximation L(S)DA; for the manganite, spin-polarized calculations result in a magnetic ground state; calculations on the ferromagnet and two antiferromagnetic structures are compared. The calculations show up similarities and differences between the bonding patterns of these two structurally related compounds that display widely different ground states when they are doped. The instabilities on or near the Fermi surface possibly implicated in the stabilization of the different ground states are, however, quite similar in character." @default.
- W2026353062 created "2016-06-24" @default.
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- W2026353062 date "1998-01-01" @default.
- W2026353062 modified "2023-10-18" @default.
- W2026353062 title "Bonding patterns and instabilities in them=2 Ruddlesden–Popper phases: LaSr2Mn2O7 and La2CaCu2O6" @default.
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- W2026353062 doi "https://doi.org/10.1039/a706965k" @default.
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